.conent-wrap{
    background-color: #ddd;
}
.content{
    width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
}
.content-left{
    width: 780px;
    height: 600px;
    border: brown 1px solid;
}
.content-right{
    width: 400px;
    height: 600px;
    background-color: blue;
}